| 摘要 |
The invention relates to a pressing tool ( 8 ) provided with three or four press mandrels ( 12, 15 ) which move towards each other during the pressing process. The press mandrels ( 12-15 ) have a roof-shaped transversal profile. The lateral distance ( 36 ) between the press mandrels ( 12-15 ) is increasingly reduced during the pressing process. An extending element ( 37 ) is arranged between two press mandrels, extending from one press mandrel to another press mandrel and being inserted into the other press mandrel during the pressing process. The aim of the invention is to improve said pressing device and to improve pressing. In order to block the above-mentioned distance ( 36 ), the extending element ( 37 ) is disposed in such a way that both roof edges ( 38 ) of the corresponding press mandrels cut across said extending element ( 37 ) in an initial position. |
